Home / 45,145.72-67,736.40-13,983.40

Finding the Fourth Proportional to 45,145.72, 67,736.40 and 13,983.40

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Solution

The fourth proportional to 45,145.72, 67,736.40 and 13,983.40 is: 20,980.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,145.72 : 67,736.40 = 13,983.40 : x
  2. Step 2: Convert to fraction form
    45,145.72/67,736.40 = 13,983.40/x
  3. Step 3: Cross multiply
    45,145.72x = 67,736.40 × 13,983.40
  4. Step 4: Simplify right side
    45,145.72x = 947,185,175.76
  5. Step 5: Solve for x
    x = 947,185,175.76/45,145.72
  6. Step 6: Final answer
    x = 20,980.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.